Half to keen



` (No Model.) I y C. L. WAGANDT.

' SOLDERING IRON.

NoI 408,772. I Patented Aug. 13, 1889.

' /Qljmesses Y i i 'n/yew, @,Jmlm f .7 @QM l UNITED STATES PATENT OFFICEe CHARLES L. VAGANDT, OF BALTIMORE, MARYLAND, ASSIGN OR OF ONE- HALF TO KEEN t I-IAGERTY, OF SAME PLACE.

f SOLDERING-IRON.

srEcIFIcATroN lforming peut of Letters Patent No. 408,772, detea August 13, 1889.

Appneetitn tied June 11, 1889.

To aZZ whom i0' may concern:

Be it known that I, CHARLES L. WAGANDT, a citizen of the United States, residing in the cityof Baltimore, in theState of Maryland,have inventedcertainnewandusefulImprovements in Soldering-'l`ools; and I do declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to that class of soldering implements in which the tip or iron is heated by a iiame of combustible gas, which is conveyed by suitable conduits to and burns in contact with or in immediate proximity to such iron or tip. The tip is subject to comparatively rapid consumption from oxidation and wear, while the rest of the tool is practically permanent. The tip is therefore made conveniently separable from its holder, the best and most economical means for this purpose being an external or male screw-thread upon lthe tip or iron and a -corresponding internal or female thread within the holder. It is also necessary, for the best results to provide means for the' application of the heating iiame or iiames, the gas for which is delivered into the interior of the holder, to the exterior of the tip, and in such manner that said flames shall have the maximum heating effect. To this end it has been the practice to form longitudinal channels or recesses upon the inner side of the holder, thereby removing portions. of the screwthread above mentioned. By these channels the heating-flames issuedat the sides of the iron; but I have foundin practice that serious disadvantages accompany this construction. It is necessary to constantly restore the proper shape of the tip by a forging operation, and Whether-this be performed upon the tip while it is in the holder` or the tip be unscrewed and screwed tightly back after the forging, I have found that the screw-threads upon it, being cut in a soft metal-copper-are cut, pressed out of shape, and partially destroyed by the sharp and hard edges, of the channels formed, as above described, in the iron-holder transversely to its screw-threads. In my improved soldering-tool this injury to the screw- Sen'alNo. 313,864. (No model.)

threads of the tip, by which its engagement by the holder is rendered very insecure, and which results in the loosening of the tip in the holder while in use, is entirely obviated. According to my improvement the channels are formed in the soft-metal tip, while the screw-threads of the iron-holder are left continuous and unbroken. I have r.also found that the heating-names are in this manner so confined and conducted along and partially within the surface of the tip, being nevertheless fully supplied with air and allowed to freely burn with perfect combustion of the gas, .that a marked increase in the calorific effect of the same amount of gas is realized.

In order to make my invention more clearly understood, I have shown in the accompanying drawings a means for carrying the same into practical effect.

In said drawings, Figure 1 is a side view of a soldering-tool embodying my invention. -Fig. 2 is a transverse section on line 2 2, Fig. 1. Fig. 3 is a perspective view of the soldering-tip detached.

Referring to the drawings, A indicates the handle of the tool, and Bthe tubular shank secured therein and ycarrying at its forward end the holder C. This latter receives the combustible gas through said shank, and is provided with apertures c to promote the burning of the heating-flames. At its forward end the holder is provided with a female screw-thread c. A

D is lthe soldering tip or iron, formed of copper and properly shaped for soldering purposes at its forward end, as shown at d.

d are longitudinal channels V-shaped in vcross-section and decreasing in depth as they 'advance toward the soldering-point. The heating-flames have their eXit from the holder C through these channels and between the periphery of the holder and the central solid portion D of the tip D, and are conducted by the channels toward the soldering-point. It will be seen that the flames are thus in amanner confined, and the dissipation and Waste of their heat prevented, while two faces d2 are provided for each flame for what may be termed the absorption of its heat.

The male screw-thread d3 is formed upon ICO its exterior and a corresponding interrupted screw-thread upon its exterior between said channels, substantially as and. for the purposes set forth.

In testimony whereof I aflx my signature in the presence of two witnesses.

CHARLES L. WAGANDT.

IVitnesses:

EDWARD L. WILSON, ROBERT W. HAYs. 

